/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:17,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:17,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:17,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:17,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:17,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:17,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:17,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:17,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:17,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:17,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:17,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:17,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:17,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:17,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:17,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:17,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:17,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:17,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:17,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:17,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:17,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:17,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:17,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:17,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:17,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:17,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:17,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:17,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:17,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:17,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:17,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:17,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:17,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:17,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:17,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:17,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:17,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:17,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:17,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:17,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:17,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:18:17,352 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:17,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:17,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:17,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:17,355 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:17,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:17,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:17,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:17,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:17,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:17,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:17,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:17,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:17,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:17,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:17,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:17,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:17,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:17,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:17,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:17,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:17,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:17,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:17,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:17,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:17,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:17,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:17,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:17,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:17,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:18:17,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:17,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:17,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:17,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:17,825 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:17,827 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 11:18:17,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f0cd1e93/8e022f0496404051a4d06bbd46fb63f9/FLAG9d5bc90bf [2020-09-25 11:18:18,588 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:18,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 11:18:18,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f0cd1e93/8e022f0496404051a4d06bbd46fb63f9/FLAG9d5bc90bf [2020-09-25 11:18:18,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4f0cd1e93/8e022f0496404051a4d06bbd46fb63f9 [2020-09-25 11:18:18,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:18,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:18,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:18,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:18,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:18,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:18" (1/1) ... [2020-09-25 11:18:18,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:18, skipping insertion in model container [2020-09-25 11:18:18,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:18" (1/1) ... [2020-09-25 11:18:18,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:18,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:19,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:19,622 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:19,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:19,760 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:19,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19 WrapperNode [2020-09-25 11:18:19,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:19,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:19,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:19,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:19,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... [2020-09-25 11:18:19,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:19,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:19,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:19,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:19,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:19,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:19,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:19,969 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:19,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:19,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:19,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:21,365 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:21,366 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:21,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:21 BoogieIcfgContainer [2020-09-25 11:18:21,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:21,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:21,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:21,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:21,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:18" (1/3) ... [2020-09-25 11:18:21,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:21, skipping insertion in model container [2020-09-25 11:18:21,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:19" (2/3) ... [2020-09-25 11:18:21,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:21, skipping insertion in model container [2020-09-25 11:18:21,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:21" (3/3) ... [2020-09-25 11:18:21,384 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-25 11:18:21,395 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:21,408 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:21,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:21,476 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:21,477 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:21,477 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:21,477 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:21,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:21,477 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:21,477 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:21,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:21,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 11:18:21,530 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:21,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:21,532 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:21,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:21,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-25 11:18:21,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:21,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 11:18:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:22,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 11:18:22,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:22,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-09-25 11:18:22,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:22,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:22,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 11:18:22,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:18:22,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:22,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:22,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:22,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:18:22,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:22,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:22,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 11:18:22,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:22,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:22,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560583942] [2020-09-25 11:18:22,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:22,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:22,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:22,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:22,754 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:24,577 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 11:18:24,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:24,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-09-25 11:18:24,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:24,602 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 11:18:24,602 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 11:18:24,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:24,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 11:18:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 11:18:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 11:18:24,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 11:18:24,704 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 71 [2020-09-25 11:18:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:24,705 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 11:18:24,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 11:18:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 11:18:24,715 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:24,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:24,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:24,716 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:24,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1195397277, now seen corresponding path program 1 times [2020-09-25 11:18:24,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:24,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957393951] [2020-09-25 11:18:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:24,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:26,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:26,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:26,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:26,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 11:18:26,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:18:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2130 [2020-09-25 11:18:26,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:26,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:26,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 11:18:26,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:27,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:27,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:27,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:27,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:27,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:18:27,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:27,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:27,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:27,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:27,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:27,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:27,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:27,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:27,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:18:27,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:27,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 11:18:27,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:27,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:27,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:27,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:18:27,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:27,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957393951] [2020-09-25 11:18:27,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:27,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:18:27,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295881716] [2020-09-25 11:18:27,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:18:27,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:27,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:18:27,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:27,352 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 11:18:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:29,074 INFO L93 Difference]: Finished difference Result 1252 states and 1563 transitions. [2020-09-25 11:18:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:18:29,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 11:18:29,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:29,080 INFO L225 Difference]: With dead ends: 1252 [2020-09-25 11:18:29,080 INFO L226 Difference]: Without dead ends: 724 [2020-09-25 11:18:29,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:29,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-09-25 11:18:29,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 697. [2020-09-25 11:18:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 11:18:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 853 transitions. [2020-09-25 11:18:29,122 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 853 transitions. Word has length 151 [2020-09-25 11:18:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:29,123 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 853 transitions. [2020-09-25 11:18:29,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:18:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 853 transitions. [2020-09-25 11:18:29,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 11:18:29,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:29,132 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:29,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:29,132 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:29,133 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-25 11:18:29,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:29,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778306094] [2020-09-25 11:18:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:29,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:30,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:34,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 11:18:34,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:18:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:18:34,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:34,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-25 11:18:34,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:18:34,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:34,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:34,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:34,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:18:34,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:34,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:34,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:34,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:34,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:34,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:34,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:34,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:34,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 11:18:34,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:34,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:34,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:34,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:34,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:34,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778306094] [2020-09-25 11:18:34,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:34,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:18:34,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246836726] [2020-09-25 11:18:34,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:34,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:34,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:34,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:34,654 INFO L87 Difference]: Start difference. First operand 697 states and 853 transitions. Second operand 8 states. [2020-09-25 11:18:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:37,770 INFO L93 Difference]: Finished difference Result 1625 states and 2053 transitions. [2020-09-25 11:18:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:18:37,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-09-25 11:18:37,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:37,779 INFO L225 Difference]: With dead ends: 1625 [2020-09-25 11:18:37,779 INFO L226 Difference]: Without dead ends: 1093 [2020-09-25 11:18:37,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:18:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-09-25 11:18:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1044. [2020-09-25 11:18:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2020-09-25 11:18:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1270 transitions. [2020-09-25 11:18:37,831 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1270 transitions. Word has length 160 [2020-09-25 11:18:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:37,832 INFO L479 AbstractCegarLoop]: Abstraction has 1044 states and 1270 transitions. [2020-09-25 11:18:37,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1270 transitions. [2020-09-25 11:18:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 11:18:37,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:37,837 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:37,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:37,838 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:37,838 INFO L82 PathProgramCache]: Analyzing trace with hash 111502418, now seen corresponding path program 1 times [2020-09-25 11:18:37,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:37,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241697994] [2020-09-25 11:18:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:37,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:37,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:40,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 11:18:40,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:40,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-09-25 11:18:40,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:40,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 11:18:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:40,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:40,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:40,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:40,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:18:40,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:40,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:40,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:40,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:40,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:40,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:18:40,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 11:18:40,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:40,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:40,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:18:40,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:41,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241697994] [2020-09-25 11:18:41,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:41,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:18:41,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172687615] [2020-09-25 11:18:41,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:41,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:41,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:41,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:41,134 INFO L87 Difference]: Start difference. First operand 1044 states and 1270 transitions. Second operand 8 states. [2020-09-25 11:18:44,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:44,310 INFO L93 Difference]: Finished difference Result 2330 states and 3029 transitions. [2020-09-25 11:18:44,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:18:44,311 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 11:18:44,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:44,320 INFO L225 Difference]: With dead ends: 2330 [2020-09-25 11:18:44,321 INFO L226 Difference]: Without dead ends: 1792 [2020-09-25 11:18:44,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:18:44,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-09-25 11:18:44,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1693. [2020-09-25 11:18:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1693 states. [2020-09-25 11:18:44,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2103 transitions. [2020-09-25 11:18:44,389 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2103 transitions. Word has length 162 [2020-09-25 11:18:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:44,390 INFO L479 AbstractCegarLoop]: Abstraction has 1693 states and 2103 transitions. [2020-09-25 11:18:44,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2103 transitions. [2020-09-25 11:18:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 11:18:44,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:44,395 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:44,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:18:44,396 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash -677190618, now seen corresponding path program 1 times [2020-09-25 11:18:44,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:44,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077947003] [2020-09-25 11:18:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:49,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 11:18:49,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:18:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:18:49,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:49,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 11:18:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:49,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:49,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:49,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:18:49,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:49,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:49,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:49,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:49,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:50,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:50,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:18:50,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:50,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-09-25 11:18:50,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:50,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 11:18:50,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:50,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077947003] [2020-09-25 11:18:50,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:50,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:18:50,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86993365] [2020-09-25 11:18:50,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:18:50,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:50,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:18:50,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:18:50,285 INFO L87 Difference]: Start difference. First operand 1693 states and 2103 transitions. Second operand 11 states. [2020-09-25 11:18:54,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:54,007 INFO L93 Difference]: Finished difference Result 3922 states and 5077 transitions. [2020-09-25 11:18:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:18:54,010 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 179 [2020-09-25 11:18:54,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:54,024 INFO L225 Difference]: With dead ends: 3922 [2020-09-25 11:18:54,025 INFO L226 Difference]: Without dead ends: 2688 [2020-09-25 11:18:54,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:18:54,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2020-09-25 11:18:54,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2496. [2020-09-25 11:18:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2496 states. [2020-09-25 11:18:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3142 transitions. [2020-09-25 11:18:54,100 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3142 transitions. Word has length 179 [2020-09-25 11:18:54,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:54,101 INFO L479 AbstractCegarLoop]: Abstraction has 2496 states and 3142 transitions. [2020-09-25 11:18:54,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:18:54,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3142 transitions. [2020-09-25 11:18:54,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 11:18:54,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:54,105 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:54,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:18:54,106 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:54,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1262455830, now seen corresponding path program 1 times [2020-09-25 11:18:54,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:54,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125640051] [2020-09-25 11:18:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:56,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:57,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:58,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 11:18:59,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:18:59,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:18:59,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:18:59,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 11:18:59,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:59,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:18:59,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:18:59,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:59,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:18:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:18:59,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:59,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 11:18:59,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:59,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:59,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 11:18:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:59,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125640051] [2020-09-25 11:18:59,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:59,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:18:59,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164173285] [2020-09-25 11:18:59,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:18:59,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:59,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:18:59,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:18:59,907 INFO L87 Difference]: Start difference. First operand 2496 states and 3142 transitions. Second operand 9 states. [2020-09-25 11:19:03,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:03,251 INFO L93 Difference]: Finished difference Result 5306 states and 6767 transitions. [2020-09-25 11:19:03,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:19:03,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 193 [2020-09-25 11:19:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:03,268 INFO L225 Difference]: With dead ends: 5306 [2020-09-25 11:19:03,268 INFO L226 Difference]: Without dead ends: 3272 [2020-09-25 11:19:03,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2020-09-25 11:19:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3099. [2020-09-25 11:19:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3099 states. [2020-09-25 11:19:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 3833 transitions. [2020-09-25 11:19:03,358 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 3833 transitions. Word has length 193 [2020-09-25 11:19:03,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:03,358 INFO L479 AbstractCegarLoop]: Abstraction has 3099 states and 3833 transitions. [2020-09-25 11:19:03,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:19:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 3833 transitions. [2020-09-25 11:19:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 11:19:03,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:03,366 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:03,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:03,366 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:03,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:03,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1644843063, now seen corresponding path program 1 times [2020-09-25 11:19:03,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:03,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283688635] [2020-09-25 11:19:03,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:03,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:03,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking...